About This Chapter
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- Students who have fallen behind in understanding the reliability of different types of measurement
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How it works:
- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the Measurement in Research chapter exam.
Why it works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the Measurement in Research chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any measurement in research question. They're here to help!
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Students will review:
This chapter helps students review the concepts in a measurement unit of a standard research methods in psychology course. Topics covered include:
- Differences between qualitative and quantitative measurement
- Conceptualization and operationalization in measurement
- Continuous, discrete and categorical variables
- Nominal, ordinal, interval and ratio scales of measurement
- Norm-referenced and criterion-referenced tests
- Direct, indirect and construct measurements
- Commonly used research measurement scales
- Methods for improving measurement reliability
- The importance of validity in measurement
- The relationship between reliability and validity
1. The Importance of Measurement in the Research Process
Why is it important to measure variables in a study? And, how do you go about doing it? In this lesson, we'll examine the importance of measurement, along with some common types of psychological measurement.
2. The Difference Between Qualitative & Quantitative Measurement
In research, there are generally two types of data. In this lesson, we'll look at quantitative and qualitative measurement, when each are used, and how researchers can sometimes use both.
3. Conceptualization & Operationalization in Measurement
When designing a study, how do you make sure that everyone knows what you're talking about? How do you measure things that seem difficult to measure? In this lesson, we'll look at two key steps in research: conceptualization and operationalization.
4. Continuous, Discrete & Categorical Variables: Definition and Examples
When doing research, variables come in many types. In this lesson, we'll explore the three most common types of variables: continuous, discrete, and categorical.
5. Scales of Measurement: Nominal, Ordinal, Interval & Ratio
When doing research, variables are described on four major scales. In this lesson, we'll look at the major scales of measurement, including nominal, ordinal, interval, and ratio scales.
6. Types of Tests: Norm-Referenced vs. Criterion-Referenced
What's the best way to score tests? In this lesson, we'll look at two major types of tests that are scored differently from each other: norm-referenced and criterion-referenced tests.
7. Types of Measurement: Direct, Indirect & Constructs
How do you measure psychological traits? In this lesson, we'll look at how psychologists measure traits, including direct and indirect observation. We will also explore why psychological traits are so difficult to measure.
8. Commonly Used Research Measurement Scales
How do you measure a person's thoughts or feelings when you can't see them? In this lesson, we'll look at common measurement scales that psychologists use when examining thoughts and feelings.
9. The Reliability of Measurement: Definition, Importance & Types
Psychologists use tools like surveys and tests to measure psychological traits. But, what happens when a measurement tool is not consistent? In this lesson, we'll examine what reliability is, why it is important, and some major types.
10. Methods for Improving Measurement Reliability
Reliability is the consistency of the results of a measurement tool. But, what causes a tool to have low reliability? And, what can be done to improve reliability? In this lesson, we'll answer both of those questions.
11. The Validity of Measurement: Definition, Importance & Types
How do you know if you are measuring what you actually want to measure? In this lesson, we'll look at what validity is, why it is important, and four major types of validity: face, construct, content, and predictive validity.
12. The Relationship Between Reliability & Validity
Though reliability and validity are different from each other, they are still related. In this lesson, we'll look at the differences of and relationship between reliability and validity.
13. Indirect Measurement: Definition & Examples
Learn what indirect measurement is and see what is involved when we use this measuring tool. Become comfortable applying indirect measurement through explanation and examples.
14. Qualitative Variable in Statistics: Definition & Examples
Being able to define and identify a qualitative variable is key to understanding statistics. Learn what a qualitative variable is, how it can be described, and review examples.
15. Naturalistic Observation: Examples, Definition & Method
The media often shows scientists hard at work in labs, wearing lab coats as they practice science. However, one particular type of research method takes place outside the lab: naturalistic observation.
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Other chapters within the Research Methods in Psychology: Help and Review course
- Introduction to Research Methods: Help and Review
- Principles of Ethical Research: Help and Review
- Setting Up the Research Study: Help and Review
- Data Collection Techniques in Psychology: Help and Review
- Nonexperimental Research: Help and Review
- Qualitative Research Methods and Design: Help and Review
- Quasi-Experimental Research: Help and Review
- Sampling and Generalization: Help and Review
- Internal Validity in Research: Help and Review
- External Validity: Help and Review
- Experimental Design: Help and Review
- Descriptive Statistics in Psychology: Help and Review
- Inferential Statistics in Psychology: Help and Review
- Evaluating Research Findings: Help and Review
- Ethics in Counselor-Supervisor Relationships